const V3_FACTORY = '0x0dfb1Bb755d872EA1fa4d95E4ad0c2E6317Ce9B9'; // 主网
const V3_POSITION_MANAGER = '0x343b244bEDF133D57C61b241557bF29AA32ea4F9';

const FACTORY_ABI = ['function getPool(address,address,uint24) view returns (address)'];
const POOL_ABI = [
  'function slot0() view returns (uint160, int24, uint16, uint16, uint16, uint8, bool)',
  'function tickSpacing() view returns (int24)'
];

const factory = new ethers.Contract(V3_FACTORY, FACTORY_ABI, provider);
const poolAddress = await factory.getPool(token0, token1, 3000);
const pool = new ethers.Contract(poolAddress, POOL_ABI, provider);

const [sqrtPriceX96, currentTick] = await pool.slot0();
const tickSpacing = await pool.tickSpacing();

function nearestUsableTick(tick, tickSpacing) {
  return Math.round(tick / tickSpacing) * tickSpacing;
}

// 示例：当前价格上下浮动 ±10%
const tickLower = nearestUsableTick(currentTick - 2000, tickSpacing);
const tickUpper = nearestUsableTick(currentTick + 2000, tickSpacing);

await token0Contract.approve(V3_POSITION_MANAGER, amount0Desired);
await token1Contract.approve(V3_POSITION_MANAGER, amount1Desired);

const PM_ABI = [
  'function mint((address,address,uint24,int24,int24,uint256,uint256,uint256,uint256,address,uint256)) payable returns (uint256,uint128,uint256,uint256)'
];

const pm = new ethers.Contract(V3_POSITION_MANAGER, PM_ABI, signer);
const deadline = Math.floor(Date.now() / 1000) + 1200;

const tx = await pm.mint({
  token0,
  token1,
  fee: 3000,
  tickLower,
  tickUpper,
  amount0Desired,
  amount1Desired,
  amount0Min: amount0Desired * 99n / 100n,
  amount1Min: amount1Desired * 99n / 100n,
  recipient: userAddress,
  deadline
});

const receipt = await tx.wait();
// 从交易回执事件中解析 tokenId

const tx = await pm.mint(params, { value: kasAmount });

const tx = await pm.increaseLiquidity({
  tokenId,
  amount0Desired,
  amount1Desired,
  amount0Min: 0,
  amount1Min: 0,
  deadline
});

const tx = await pm.collect({
  tokenId,
  recipient: userAddress,
  amount0Max: ethers.MaxUint128,
  amount1Max: ethers.MaxUint128
});

const tx = await pm.decreaseLiquidity({
  tokenId,
  liquidity: liquidityToRemove,  // 完全移除时使用全部流动性
  amount0Min: 0,
  amount1Min: 0,
  deadline
});

const tx = await pm.collect({
  tokenId,
  recipient: userAddress,
  amount0Max: ethers.MaxUint128,
  amount1Max: ethers.MaxUint128
});

const tx = await pm.burn(tokenId);

// 限价卖出：仅提供 token0，范围在当前价格之上
const tx = await pm.mint({
  token0,
  token1,
  fee: 3000,
  tickLower: currentTick + 60,    // 高于当前价格
  tickUpper: currentTick + 600,
  amount0Desired: sellAmount,
  amount1Desired: 0,              // 不需要 token1
  amount0Min: 0,
  amount1Min: 0,
  recipient: userAddress,
  deadline
});